Hitachi V-209 Service Manual

							Q) 
Operation 
[!RIG)  MODI l V- V  ,TRJCJ 
MODI:  fV-11 
(  Oll  )  lim  O\tlllmcopc  ,ynchronizc�  \\llh only 
(-)  ,ym;hronum)!  \l!!nal. 
(REFERENCE) 
Video  tgnal 
Synchronizmg  signal 
(a)  Example  of(-) 
synchronizing  signal  (b) 
Example  of(+} 
synchronizing  signal  9. 
ADJUSTMENTS 
The  ATT  balance  of the  '-Crtkal  "''scan be made  easily. 
Qj  ct 
the  input  couphng  �\Htchc of C Ill  .tiiJ  CH�  to 
G:-.:D  and set the  TRIG  MODI  to \L ro.  1  hen posn10n 
the  bright  line to the  center. 
�  Turn  the VOLTS  DIY switch  to SmV  IOmV and ad­
JUSt  it so  that  the bnght  line does  not move  (Remove  the 
cover). 
CHI DC  B-\L 
-\dJU'tm.:nt o l..:::..--l-�./ 
, ...  
						

							1 0.  MAINTENANCE 
28  I) 
Since  semiconductors,  precJsJon components,  etc. are 
employed  in this  oscilloscope,  use atmost  care for opera­
tion  and storage. 
2) Clean  the scale  with soft tissue  periodically. 
3)  Store  this oscilloscope  in the  ambient  temperature  from 
-15  to +60°C  (except  for the  battery  pack AD-209)  .  11. 
SPECIFICATIONS 
!CR T! 
Type 
3.5-inch  rectangular  CRT with internal  graticule. 
P h osp hor 
P31  standard 
Graticule  8 x 10  div  (div  = 6.85  mm) 
Internal  graticule 
Focussing  Possible  (with  automatic  focus correction  circuit) 
Trace  rotation 
Brightness  adjustment  Present 
Possible 
I  Z-AXIS 
INPUT (INTENSITY 
MODULATIO@ 
DC-coupled,  positive-going  signal decreases  intensity: 
SVp-p  signal causes  noticeable  modulation  at normal 
intensity:  DC to l MHz 
Input  impedance 
Approximately 50  k ohm  
						

							Maximum 
input voltage 
SOV (DC+ peak  AC) 
Coupling  DC 
VERTICAL  DEFLECTION  SYSTEM (2 identic�  �hannetS}] 
Bandwidth  and rise time 
DC  to at least  20 MHz  and rise time  17.5  ns or less.  DC 
to  at least  5 MHz  and rise time 70ns  or less  at magnifier 
extends.  The AC coupled  lower -3dB point  is I 0  Hz  or 
less. 
Deflection  factor 
SmV/div  to SV/div  in 10  calibrated  steps in a I  2  5 
sequence.  Uncalibrated  continuous control extends  de­
flection  factor to at least  12.5 Volts  per division  in the 
5  Volts/div  position. xS MAG  increases  sensitivity  of 
each  deflection  factor setting  to I mV/div. 
Accuracy  ±3%  (+10to+35°C) 
Additional  error for magnifier  ±2% 
Display  modes 
CHI,  CH2 (normal  or invert),  Alternate,  Chopped 
(approximate  250kHz), Added  Input 
impedance 
1  MS1  ± 1.5c;(  in parallel  with 30 ±3pF 
Maximum  input voltage 
250V  (DC+ peak  AC') or SOOVp-p  A(' at I kHz  or less 
Input  coupling 
AC, GND.  DC 
L  HORIZONTAL  DEFLECTION SYST
EM] 
Time  base 
O.S ps/div  to 0.2s/div  in 18  calibrated  steps in a I  2  5 
s eq uenc e.  Uncalibrated  continuous control extends  de­
flection  factor to at least  0.5 seconds  per division  in 
the  0.2 sec/div  position.  xI 0 MAG  extends  maximum 
sweep  rate to 50ns/div. 
Accuracy  ±3%  (+IO to +35°C) 
AdditionaJ  error for magnifier ±2% 
[ TRIGGERING  SYSTEM! 
Trigger  modes 
Automatic,  Normal, TV (TV-H  orTV-V) 
29  
						

							JO Trigger 
source 
Internal  (ChI. Ch2),  Lmc, l:.:
						

							I 
POWER 
SUPPLY 
I 
VOLTAGE  {S0/60Hz) 
IO OV  (90  130V) 
200V  (180-260V) 
Power  supply  frequency:  SO, 
60,  400Hz 
Power  consumption:  Approx. 
18W  FUSE 
lA 
O.SA 
EXT  DC power  supply: 
DC IIV- 14Y  Approx.  0.8A 
' E NVIRONMENT  I 
Limit  of operation  temperature 
Limit  of operation  humidity 
Rated  range of use  temperature 
Rated  range of use  humidity 
Storage  and transport  temperature 
f  DIMENSIONS 
AND WEIGHT 
I 
Approx.  215(W) x II  O(H)  x 330(0)  mm 
(8.6(W)  x 4.4(H)  x 6.4(0)  inch)  35 
85% 
45-85% 
-20-+70 °C  Approx. 
4.5 kg ( 10  lbs) 
j option  I 
Accessory  pouch 
Hood  Shoulder  belt 
I  AD- 209 type  Battery  � 
Batteries 
Nominal  capacity 
Nominal  voltage  I 0 
rechargeable 
A  nickel-cadmium cells 
1800  mAh 
12V 
Battery  execessive  discharge protection 
Instrument  operation automatically  interruped when 
battery  charge drops to approximately  JO.SY. 
Charge  current 
Approx. 180 rnA 
Charge  time 
13-16 hours for full  charge 
31  
						

							1 
2.  EXTERNAL  VIEW 
32  TOP  YiC\� ...... .. 
• 
• 
00 
000000 
0 
0 
··� 
SIDE  view  UniL: 
mm 
'10DEL  V-209